How to calculate MD5 Hash when creating Zip with 7zip

Question

I am building an application that will use 7zip to create ZIPs. I know that 7zip will report the CRC's for the files within the ZIP but I would like to calculate the MD5 hash values of the files within the zip as well. Does anyone know if 7zip is capable of doing this or will I have to use a different utility (like md5sum) to calculate the hashes prior to zipping them.

Thanks.

Solution

The Zip algorithm uses CRC checksums to verify the archive is not corrupt. It does not have a concept of md5 checksums.

You will need to calculate all the hashes before creating your archive.